Sill flashing



July 17, 1928.

I G. L. CHERRY SILL FLASHING Filed Feb. 7, 1927 27 W g I Patented July17, 1928.

UNITED STATES i GEORGE L. CHERRY, OF PORTLAND, OREGON.

SILL FLASHING.

Application filed February This invention relates to flashing and moreparticularly to adjustable sill flashing.

It contemplates more especially the provision of means for enablingsuitable drainage without possible leakage through the jointure ofcomplemental members constituting flashing for windows or likestructures.

In the construction of windows, much difficulty has beenGDCOl'l'lltOl'OCl in effecting suitable drainage of moisture to a pointexterior of the sheathing without any pos sible leakage within theassociated structure. The present invention contemplates the provisionof means for draining moisture along a predetemii'ied path withoutpermitting any possible lateral flow which permeates concealed portionsof the structure especially about the sill of windows.

Moreover, windows are of varyin sizes, and it has heretofore beennecessary to make the flashing of a size particularly suited to meet aparticular need, thereby entailing much labor and expense in providingflashing for each individual construction.

In view thereof, it is desirable to provide standard complementary unitswhich are readily assembled with ease to constitute flashing capable ofbeing adjusted with ease to various sizes within a predetermined rangeto meet the usual demands of the trade. This renders it possible tofurnish standard units to the trade, which material- 1y reduces thequantity of stock required, and reduces the expense of manufacturethereof to a minimum.

One object of the present invention is to simplify the construction andimprove the operation of devices of the character mentioned. I

Another object is to provide adjustable flashing for windows of varyingsizes.

Still another object is the provision of means in association with sillflashing to effect drainage of moisture along a predetermined path to anexterior position.

A further object is the provision of sill flashing constitutingcomplemental units relatively adjustable for association with a sill ofvarying spread.

A still further object is the provision of complemental units havingcorrugations impressed therein to effect drainage along a predeterminedpath and to prevent leakage therebetween.

Other objects and advantages will appear from the following descriptionof an illus -7, 1927. Serial No. 166,320.

trative embodiment of tion.

In the drawing:

Figure 1 is a sectional perspective view of a sill construction inassociation with flash ing embodying features of the present invention.

Figure 2 is a perspective view of flashing constituting a complementalof the flashing shown in Figure 1.

Figure 3 is a similar View of flashing disposedintermediate the endflashing for overlapping relation therewith in a manner shown in Figure1.

Figure 4 is a perspective view of end flashing adapted to be disposed inconfront ing relation with the flashing shown in Figure 2.

The. flashing selected for illustration is shown in association with awindow con struction comprising the usual stud frame 10 having sheathing11 on the exterior face thereof, the sheathing 11 being shielded fromexposure by means of lap iiing 12 having the usual building paper 13interposed therebetween.

Windows are usually provided with sills 14 which have laterallyprojecting edge portions 15 on both sides thereof to abut the exteriorsurface of the building paper 13 to serve as a surface draining Waterbeyond the wall 12 of the building. usually disposed in an inclinedposition to effectively drain. moisture therefrom, it be ing providedwith a suitable groove 16 in proximity to the interior edge thereof toreceive the bottom of the window frame which assumes a position inabutting relation therewith in its closed position.

It is necessary or at least highly desirable to provide sill flashing inorder to pre vent seepage of the moisture through the jointure of theassociated members constituting the building construction, as suchseepage results in concealed deterioration and decay which is extremelydetrimental. Sill the present invenend unit flashing is usually disposedunderneath the sill in a position to preclude the possibility ofmoisture entering the structure internic diate the exterior finish 12and. the plaster 17 constituting the inner surface thereof.

The flashing comprises, in this instance, a member stamped or otherwiseshaped from sheet material to define a flat plane corresponding in shapeand contour with the under surface of the sill 14 so that any seep- Thesill 14 is 7 lllix age along the surface thereof will be received by theflashing and conveyed to the exterior of the lapping 12. In the presentembodiment, the flashing consists of complemental sections 18, 19 and 20which have a series of corrugations -21 impressed therein to defineuniformly spaced troughs 22 extending normal to the walls of thestructure to convey moisture from any point of the interior thereof to aposition exterior of the lapping 12.

It is to be noted that the member 18 is provided with upstanding flanges23 and 24 which are bent from the surface of the sheet 18 along adjacentintersecting edges thereof. The flanges 23 and 24 have confronting edgeswhich may be soldered or otherwise secured together to define a corner25, the flange 23 being (o-extensive with th-einterior'edge'of themember 18 while the flange 24: terminates in the plane of the sheathing11 1). This formation defines a portion 26 which extends beyond theflange 24 to permit a marginal area 27 to be bent therefrom to define aturned down flange which contacts with the exterior surface of thelapping 12 underneath the sill 14. The flanges 23, 24, and 27 enable themember 18 to be fastened in any appropriate manner in an operableposition beneath the sill 1d as by the fasteners 28, the member 18constituting flashing for a sill 14 of standard construction.

The other side of the sill 14 is flashed in a corresponding manner bymeans of a similarly shaped member which has a flange 29 on the rearwardedge thereof to correspond with the flange 23 on the member 18 as wellas a side flange 30 adapted to confront the flange 24- in a manner shownin Figures 2 and 1. The member 20 is likewise fastened to the structureon the other side of the sill in a orresponding opposed position.Intermediate flashing 19 having an upstanding flange 31 on the rear edgethereof, is'corrugated in a manner similar to the flashing describedhereinabove to cooperate therewith in overlapping relation so that thecorrugations 21 impressed therein will be received by the correspondingcorrugations impressed in the members 18 and 19 to prevent leakagetherebetween.

With such an arrangement, water received on the flashing will be drainedexteriorly of the lapping 12 in that lateral seepage thereon isprevented by the nodes disposed intermediate the troughs 22 wherein themoisture is guided along apredetermined path. The corrugations 21prevent relative lateral displacement of the complementalmembers, inthis instance members 18, 19 and 20, and since the water cannot flowlaterally, the possibility of seepage through the jointure pres entbetween the overlapping flashing, is avoided. r

oro'ectin ed e turned down to define a flange 27 so as to enable theflashing to be tacked or otherwise secured in position prior to thedisposition of the sill 14 thereon.

Various changes may be made in the embodiment ofthe invent ion hereinspecifically desribed without departing from or sacrificing any of theadvantages thereof as de scribed in the appending claims.

I claim 2- 1. The con'rbinatioi'i with a sill, of end flashing disposedthereunder, and intermediate flashing on said end flashing to permit avariable spread thereof.

2. The combination with a sill, of end flasl'iiug disposed thereunder,intermediate flashing on said end flashing to permit a variable spreadthereof, and means asso ciated therewith to prevent lateral movementbetween said end and intermediate flashing.

3. The combination with a sill, of end flashing disposed thereunder,intern'iediate flashing on said end flashing to permit a variable spreadthereof, and corrugations impressed in said flashing to effectunidirectional drainage thereon. a

1. The combination with a sill, of a plurality of complemental membersdisposed thereunder to effect drainage along a predetermined path, saidmembers consisting of confronting end flashing, and intermediateflashing disposed on said end flashing to 'enable a variable spreadthereof.

5. The combination with a sill, of a plurality of complemental membersassociated therewith, said members consisting of confronting endflashing, intermediate flashing disposed on said end flashing to enablea variable spread thereof, and corrugations impressed in said members toeffect unidirectional drainage.

6. The combination with a sill, of a plurality of complen'iental membersdisposed thereunder to shield the contacting surface thereof, saidmembers consisting of confronting end flashing, intermediate flashingdis- (irEOR-GE L. CHERRY.

